If you have old equipment, and old tools you need some of these.   The biggest is from Golden Rod, Hastings, Nebraska.   The tank holds near a full quart.  Got it at an antique shop.  The second is the only pump oiler I've seen with the pumper built right into the tank.  Don't use them a lot anymore, but still a very handy tool to keep around. 

I spent a lot of time and effort cleaning up and fixing those old golden rod oilers found in the oily shop.  I find them handy to have around.